Right and Left in Serbia are a little different than in western Europe.The right-wingers were too stupid to see this and reacted as the organisers anticipated.
This has the beneficial effect to the Serbian homosexual lobby of painting all their their detractors as violent homophobes. The thousands who took part in a peaceful religious demonstation the previous evening will be ignored and the western world will now visualise all anti- homosexual agenda demonstators as skinhead fascists.
This is the political reality of what happened.
The Democrats are socially liberal but economically to the right.
The Radical Party are socially conservative, ultra-nationalist but economically to the left....In many ways Serbia is a sick society that hasnt yet gotten over the effects of the proxy war fought against multicultural socialist Yugoslavia and the lies told about them by the BBC, etc.